' the library start-up code already called these OS functions
' these functions can be used to fetch the information stored by the library
> FUNCTION getrez !v1.00
  $F%
  RETURN WORD{HIMEM+84}
ENDFUNC
' the library start-up creates a DTA for you, this returns its address
> FUNCTION fgetdta !v1.00
  $F%
  RETURN LONG{HIMEM+20}
ENDFUNC
> FUNCTION graf_handle(VAR cw&,ch&,bw&,bh&) !v1.00
  $F%
  cw&=WORD{HIMEM+88}
  ch&=WORD{HIMEM+90}
  bw&=WORD{HIMEM+92}
  bh&=WORD{HIMEM+94}
  RETURN WORD{HIMEM+86}
ENDFUNC